<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			.base{
				
				
				width: 200px;
				height: 200px;
				/* border: 1px solid  #BBBBBB; */
				/* border: 1px solid ; */
			}
			
			.b:hover {
				/* 羽化半径 */
				box-shadow:  5px 5px 15px rgba(0,0,0,.4);
				
			}
			
			
		
		</style>
	</head>
	<body>
		
		

		<div class="base b">
			
			AAA  BBB  V+CCC 
		</div>
		
		
	</body>
</html>
